The Effects of Additional Tuna Madihang Bone Fish Treatment on the Growth of Catfish (Clarias gariepinus) in Biofloc Pond in Ternate City North Maluku, Indonesia

The need for fish protein always increases along with the increase in urban population. To meet the food needs of the people in the city of Ternate, one way is to cultivate catfish using a biofloc system. To accelerate the growth of catfish, one of the efforts made is by adding fish bone meal to standard feed. Tuna fish bone meal contains minerals, especially calcium and phosphorus, which can help accelerate the growth of catfish so that harvest time can be accelerated. The objectives of the research are (1) To introduce catfish cultivation with a biofloc system that is effective, efficient and easy to do even on limited land (2) Fish bone meal addition treatment with fish bone meal concentrations (0%, 10%, 15% and 20%) and (3) The catfish cultivation system using the biofloc method can provide maximum results. The method used in this research is an experimental method on a biofloc pond system which consists of three biofloc ponds with a diameter of 3x3 meters. The results of this research are (1) Catfish is a fishery product that has an important prospect for development through cultivation using biofloc ponds (2) The best average value was in the treatment of adding fish bone meal with a concentration of 20% in almost all treatments except for the growth rate treatment which was highest in treatment (c) 0.73 and (3) The addition of tuna bone meal to biofloc pond cultivation can be used as a recommendation for developing catfish cultivation because it has quite promising market prospects.